Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 8, NWS Mobile, AL

March 16, 2021Butler County, Crenshaw County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 16, 2021, 1:11 PM CDT for Butler County, Crenshaw County, Alabama. It was in force for 49 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 16, 2021, 1:11 PM CDT (18:11 UTC)
Expired: Mar 16, 2021, 2:00 PM CDT
In force: 49 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Butler County, AL, Crenshaw County, AL

The radar

The Maxwell AFB radar (KMXX), 89 km from the middle of the area, began a volume at 18:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Mar 16, 1:49 PM CDT	TSTM WND DMG	2 N Saville, AL	WIND DAMAGE REPORTED ON OWENS FARM RD. A STORAGE TRAILER WAS OVERTURNED AND A STORAGE SHED WAS DESTROYED. A MOBILE HOME ALSO SUFFERED MINOR SIDING DAMAGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.2 hours before the alert went out and 147 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 181 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 623 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

580 
WUUS54 KMOB 161811
SVRMOB
ALC013-041-161900-
/O.NEW.KMOB.SV.W.0008.210316T1811Z-210316T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
111 PM CDT Tue Mar 16 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northeastern Butler County in south central Alabama...
  Northern Crenshaw County in south central Alabama...

* Until 200 PM CDT.

* At 110 PM CDT, a severe thunderstorm was located 6 miles southwest
  of Lowndes County Airport, or 7 miles northwest of Greenville,
  moving east at 35 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Greenville, Petrey and Highland Home. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Damaging winds and continuous cloud to ground lightning is occurring 
with this storm. Move indoors immediately. Lightning is one of 
nature's leading killers. Remember, if you can hear thunder, you are 
close enough to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3183 8673 3196 8677 3196 8641 3205 8640
      3205 8630 3197 8630 3196 8619 3189 8617
      3179 8620 3179 8615 3178 8615
TIME...MOT...LOC 1810Z 265DEG 31KT 3192 8668 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

CGAL

2 follow-up statements

028 
WWUS54 KMOB 161829
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
129 PM CDT Tue Mar 16 2021

ALC013-041-161900-
/O.CON.KMOB.SV.W.0008.000000T0000Z-210316T1900Z/
Butler AL-Crenshaw AL-
129 PM CDT Tue Mar 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHEASTERN BUTLER AND NORTHERN CRENSHAW COUNTIES...

At 128 PM CDT, a severe thunderstorm was located near Logan, or 6
miles southeast of Fort Deposit, moving east at 35 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Petrey and Highland Home. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3181 8655 3196 8661 3196 8641 3205 8640
      3205 8630 3197 8630 3196 8619 3189 8617
      3179 8620 3179 8615 3178 8615
TIME...MOT...LOC 1828Z 265DEG 31KT 3193 8649 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

CGAL

848 
WWUS54 KMOB 161857
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
157 PM CDT Tue Mar 16 2021

ALC013-041-161905-
/O.EXP.KMOB.SV.W.0008.000000T0000Z-210316T1900Z/
Butler AL-Crenshaw AL-
157 PM CDT Tue Mar 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BUTLER AND
NORTHERN CRENSHAW COUNTIES WILL EXPIRE AT 200 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3181 8655 3196 8661 3196 8641 3205 8640
      3205 8630 3197 8630 3196 8619 3189 8617
      3179 8620 3179 8615 3178 8615
TIME...MOT...LOC 1855Z 265DEG 31KT 3195 8623 

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 16, 12:36 AM CDT	Special Weather Statement	MOB	Choctaw	39 min
Mar 16, 1:17 AM CDT	Special Weather Statement	MOB	Choctaw	43 min
Mar 16, 1:38 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	52 min
Mar 16, 2:31 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	28 min
Mar 16, 3:44 AM CDT	Marine Dense Fog Advisory	MOB		9 hr
Mar 16, 3:52 AM CDT	Special Weather Statement	MOB	Choctaw	23 min
Mar 16, 4:24 AM CDT	Special Weather Statement	MOB	Wilcox	66 min
Mar 16, 4:40 AM CDT	Severe Thunderstorm Warning	MOB	Wilcox	30 min
Mar 16, 5:48 AM CDT	Special Weather Statement	MOB	Wilcox	27 min
Mar 16, 9:24 AM CDT	Flash Flood Warning	MOB	Choctaw, Clarke	8 hr
Mar 16, 9:29 AM CDT	Flash Flood Warning	MOB	Wilcox	8 hr
Mar 16, 10:10 AM CDT	Special Weather Statement	MOB	Clarke	50 min
Mar 16, 10:41 AM CDT	Special Weather Statement	MOB	Clarke	49 min
Mar 16, 11:09 AM CDT	Special Weather Statement	MOB	Wilcox	51 min
Mar 16, 11:28 AM CDT	Flash Flood Watch	MOB	Butler, Choctaw, Clarke, Conecuh, Crenshaw, Monroe and 2 more	12 hr
Mar 16, 11:42 AM CDT	Special Weather Statement	MOB	Wilcox	48 min
Mar 16, 12:11 PM CDT	Special Weather Statement	MOB	Butler	34 min
Mar 16, 12:47 PM CDT	Special Weather Statement	MOB	Butler, Crenshaw	58 min
Mar 16, 2:00 PM CDT	Special Weather Statement	MOB	Crenshaw	15 min
Mar 16, 4:47 PM CDT	Flash Flood Warning	MOB	Choctaw, Clarke, Washington, Wilcox	6 hr
Mar 16, 4:48 PM CDT	Marine Dense Fog Advisory	MOB		17 hr
Mar 16, 4:48 PM CDT	Small Craft Advisory	MOB		5 days
Mar 16, 4:53 PM CDT	Dense Fog Advisory	MOB	Baldwin, Mobile	17 hr
Mar 16, 4:53 PM CDT	Wind Advisory	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more	28 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.